2б+ф=72 *2
2ф+б=66
4б+2ф=144
4б+2ф-2ф-б=144-66
3б=78
б=26
ф=20
x=баск
у=футб
2x+y=72
2y+x=66
x=66-2y
2(66-2y)+y=72
132-4y+y=72
-3y=72-132
y=20р
40+x=66
x=26р
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
2б+ф=72 *2
2ф+б=66
4б+2ф=144
2ф+б=66
4б+2ф-2ф-б=144-66
3б=78
б=26
ф=20
x=баск
у=футб
2x+y=72
2y+x=66
x=66-2y
2(66-2y)+y=72
132-4y+y=72
-3y=72-132
y=20р
2y+x=66
40+x=66
x=26р